It seems as though you are expecting that the UT crank and bearings job is to hold the cups in place.
Wrong. Very wrong.
If the BB shell width is within spec (68 +/- 0.
, then the answer is loctite on the cups. I have not needed to this personally, but there's threads discussing the issue.
There's sometimes a buggy.
How many drivers does a buggy have?
So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.http://www.youtube.com/watch?v=GekiIMh4ZkM